225619 has 2 divisors, whose sum is σ = 225620. Its totient is φ = 225618.

The previous prime is 225613. The next prime is 225629. The reversal of 225619 is 916522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225619 - 2³ = 225611 is a prime.

It is a super-2 number, since 2×225619² = 101807866322, which contains 22 as substring.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 225593 and 225602.

It is not a weakly prime, because it can be changed into another prime (225611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112809 + 112810.

It is an arithmetic number, because the mean of its divisors is an integer number (112810).

225619 is a Friedman number, since it can be written as (19*5^2)^2-6, using all its digits and the basic arithmetic operations.

2²²⁵⁶¹⁹ is an apocalyptic number.

225619 is a deficient number, since it is larger than the sum of its proper divisors (1).

225619 is an equidigital number, since it uses as much as digits as its factorization.

225619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 225619 is about 474.9936841685. The cubic root of 225619 is about 60.8777449300.

The spelling of 225619 in words is "two hundred twenty-five thousand, six hundred nineteen".